Dahon Hammerhead Folding Bike Patented LockJaw folding technology lets the Hammerhead fold up to go anywhere Dahon Axis stem and Kore T-beam saddle offer an almost infinite range of adjustment for the perfect riding position SRAM DoubleTap shifters are silky smooth and serve up crisp, fast shifts Kinetix Pro wheels are the strongest, lightest, fastest 20 wheels available